Some nutritionists believe that restricting certain foods, including dairy, sugar, salt, wheat, and caffeine, can help reduce menstrual pain.

However, experts say you shouldn't restrict foods unless there is a confirmed food sensitivity.

On one hand, this is yet another low-carb plan that restricts beneficial foods like fruits, vegetables, and dairy.

The diet requires severely restricting or eliminating foods high in Phe, such as meat, chicken, fish, eggs, nuts, cheese, legumes, milk and other dairy products.

It is not necessary to restrict fluids or foods before the test.

It's likely that people find success not because the diet is revolutionary, but because they changed their lifestyle by restricting non-nutritional foods [source: Weil].

If you decide to feed your children a diet that restricts some, most or all animal foods, you have to be prepared to eat that way, too.

Not restricting foods or following fad diets," adds Rich.

Also, while eating more healthily, they did not completely restrict favourite foods.

Food safety worries led to legislation in Denmark in 2004 restricting foods fortified with extra vitamins or minerals.